I've sent the manufacturer a link to this video.
Possible combinations: 10,000
Time to pick: 3-10 seconds
Brand: Goldwall
Model: MG213 / MG214 / MG283 / MG284
This method should work on all similar poorly made 'locks'.
In the case of the bicycle lock, the wheels may not jam into place, but you can tell by the gap and looseness of the mechanism when you've got the right number.
MANUFACTURER INFORMATION:
Quote: "Our Combination Lock comply with International Quality Standards and their quality and durability are fully guranteed."
Name: Zhejiang Pujiang Jinlei Co., Ltd.
Address: 177 Jinlei Avenue, Pujiang City, Pujiang Economic Development Zone, Zhejiang Province. China. Zip: 322200
Website: http://www.cngoldwall.com / http://www.goldwall.cn / http://goldwall0614.diytrade.com
MANUFACTURER CONTACT:
GoldWall Brand: Tel:+86-579-84200136 / Fax:+86-579-84200130 / Email: cngoldwall@163.net / MSN: sisu1007@hotmail.com
Company HQ: Tel: +86-579-84928006 / Fax: +86-579-84928006
Sales Manager: Yutian Chen / Tel: +86-130-17965778
Other Contact: Ms.Yulan Zhou / Tel: +86-579-4200133 / Mob: +86-13305890755 / Fax: +86-579-4200130